cavalcade sometimes consisted of five thousand horsemen, all
persons of fair repute and easy fortune.

There can be no doubt that the Censors who instituted this august
ceremony acted in concert with the Pontiffs to whom, by the
constitution of Rome, the superintendence of the public worship
belonged; and it is probable that those high religious
functionaries were, as usual, fortunate enough to find in their
books or traditions some warrant for the innovation.

The following poem is supposed to have been made for this great
occasion. Songs, we know, were chanted at religious festivals of
Rome from an early period, indeed from so early a period that
some of the sacred verses were popularly ascribed to Numa, and
were utterly unintelligible in the age of Augustus. In the Second
Punic War a great feast was held in honor of Juno, and a song was
sung in her praise. This song was extant when Livy wrote; and,
though exceedingly rugged and uncouth, seemed to him not wholly
destitute of merit. A song, as we learn from Horace, was part of
the established ritual at the great Secular Jubilee. It is
therefore likely that the Censors and Pontiffs, when they had
resolved to add a grand procession of knights to the other
solemnities annually performed on the Ides of Quintilis, would
call in the aid of a poet. Such a poet would naturally take for
his subject the battle of Regillus, the appearance of the Twin
Gods, and the institution of their festival. He would find
abundant materials in the ballads of his predecessors; and he
would make free use of the scanty stock of Greek learning which
he had himself acquired. He would probably introduce some wise
and holy Pontiff enjoining the magnificent ceremonial which,